Free Shipping Offers are for Standard Ground Delivery service and are only valid for shipping addresses within the 48 Contiguous United States. Truck freight and oversize charges still apply unless otherwise notes and can only be shipped to the lower 48 States.Same Day Shipping (on most parts) if you order by 5PM EST on a business day. We ship via UPS Ground and/or USPS to all locations in the Continental 48 States.

Product Resources

"X" is the Mark of Quality. Stainless Works 3 in. Off-Road X-Pipe is designed to replace factory pipes for that race car growl that no Mustang should be without. Proudly made in the U.S.A. by the best craftsmen in the industry, the x-pipe will improve your GT's exhaust flow and increase its power.

Easy Installation. The x-pipe matches up to both ends of your Mustangs factory connection points offering easy bolt-on installation. This product is Intended for off-road use only

Limited Lifetime Warranty. Stainless Works exhaust products constructed from 304 Stainless Steel are covered under a limited lifetime warranty against defects in workmanship and corrosion rust through that's extended to the original purchaser. Please see warranty for complete information.

Stainless Works 3 in. Off-Road X-Pipe (11-14 GT)

Word on The Street

I've had my 2012 Mustang for one month now and have made four separate purchases so far. American Muscle is by far, and I have browsed the web on other sites, the best for parts, add-ons or anything Mustang for that matter. My purchases were made online but I had a question on one of them so I called customer service. Customer service could not have been better. As a Pennsylvania resident I am proud to support a (PA) operated business and I recommend them to anyone seeking a great experience in service and merchandise. I can.t wait till my next order arrives. Thank you American Muscle.

Meet Our Team

My life has always involved cars. My Dad drag raced up until the time I was born, and my Mom spent lots of time at the local dragstrips while she was pregnant with me. Yes, the sound of high compression V8’s and the smell of tire smoke must have had an effect on me.
I spent countless hours as a chi...